Stilbenes belongs belongs to the group of estrogens (or oestrogens) are primary female sex hormones and play an important role in the regulation of many physiological processes of the reproductive system, such as ovulation, fertilization, implantation of the embryo and lactation. They can be produced synthetically and are used as a medication. Some estrogens are used as steroids. If animals are treated with estrogens, drug residues may remain in the animal’s meat and milk. Our reliable test systems can detect estrogen residues.
A competitive enzyme immunoassay for screening and quantitative analysis of diethylstilbestrol (DES) in various matrices.
Diethylstilbestrol (DES) is banned in the European Union for use as growth promoter in livestock. Recommended concentration for screening tests have been set: 2 ppb for liver and 1 ppb for urine and tissue.
|Test format||Microtiter plate, 96 wells.|
|Sample preparation||For tissue and urine fast and efficient methods are included in the kit manual.|
|Incubation time||90 minutes|
|Detection limit||Tissue 0.18 ppb
Urine 0.16 ppb
|Cross reactivity||Diethylstilbestrol 100%, Diethylstilbestrol-glucuronide 68%,Hexestrol 22%, Dienestrol <1%, 17 β-Estradiol < 0,01%|
RIDA® DES Assay Control (positive)
5 ml of freeze-dried urine of calves, postive for DES.
RIDA® DES Assay Control (negative)
5 ml of freeze-dried urine of calves, negative for DES.